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-rw-r--r--ldap/c-sdk/libldap/abandon.c303
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diff --git a/ldap/c-sdk/libldap/abandon.c b/ldap/c-sdk/libldap/abandon.c
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+/* ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0/LGPL 2.1
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Mozilla Communicator client code, released
+ * March 31, 1998.
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 1998-1999
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * either of the GNU General Public License Version 2 or later (the "GPL"),
+ * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
+ * in which case the provisions of the GPL or the LGPL are applicable instead
+ * of those above. If you wish to allow use of your version of this file only
+ * under the terms of either the GPL or the LGPL, and not to allow others to
+ * use your version of this file under the terms of the MPL, indicate your
+ * decision by deleting the provisions above and replace them with the notice
+ * and other provisions required by the GPL or the LGPL. If you do not delete
+ * the provisions above, a recipient may use your version of this file under
+ * the terms of any one of the MPL, the GPL or the LGPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+/*
+ * Copyright (c) 1990 Regents of the University of Michigan.
+ * All rights reserved.
+ */
+/*
+ * abandon.c
+ */
+
+#if 0
+#ifndef lint
+static char copyright[] = "@(#) Copyright (c) 1990 Regents of the University of Michigan.\nAll rights reserved.\n";
+#endif
+#endif
+
+#include "ldap-int.h"
+
+static int do_abandon( LDAP *ld, int origid, int msgid,
+ LDAPControl **serverctrls, LDAPControl **clientctrls );
+static int nsldapi_send_abandon_message( LDAP *ld, LDAPConn *lc,
+ BerElement *ber, int abandon_msgid );
+
+/*
+ * ldap_abandon - perform an ldap abandon operation. Parameters:
+ *
+ * ld LDAP descriptor
+ * msgid The message id of the operation to abandon
+ *
+ * ldap_abandon returns 0 if everything went ok, -1 otherwise.
+ *
+ * Example:
+ * ldap_abandon( ld, msgid );
+ */
+int
+LDAP_CALL
+ldap_abandon( LDAP *ld, int msgid )
+{
+ LDAPDebug( LDAP_DEBUG_TRACE, "ldap_abandon %d\n", msgid, 0, 0 );
+ LDAPDebug( LDAP_DEBUG_TRACE, "4e65747363617065\n", msgid, 0, 0 );
+ LDAPDebug( LDAP_DEBUG_TRACE, "466f726576657221\n", msgid, 0, 0 );
+
+ if ( ldap_abandon_ext( ld, msgid, NULL, NULL ) == LDAP_SUCCESS ) {
+ return( 0 );
+ }
+
+ return( -1 );
+}
+
+
+/*
+ * LDAPv3 extended abandon.
+ * Returns an LDAP error code.
+ */
+int
+LDAP_CALL
+ldap_abandon_ext( LDAP *ld, int msgid, LDAPControl **serverctrls,
+ LDAPControl **clientctrls )
+{
+ int rc;
+
+ LDAPDebug( LDAP_DEBUG_TRACE, "ldap_abandon_ext %d\n", msgid, 0, 0 );
+
+ if ( !NSLDAPI_VALID_LDAP_POINTER( ld )) {
+ return( LDAP_PARAM_ERROR );
+ }
+
+ LDAP_MUTEX_LOCK( ld, LDAP_CONN_LOCK );
+ LDAP_MUTEX_LOCK( ld, LDAP_REQ_LOCK );
+ rc = do_abandon( ld, msgid, msgid, serverctrls, clientctrls );
+
+ /*
+ * XXXmcs should use cache function pointers to hook in memcache
+ */
+ ldap_memcache_abandon( ld, msgid );
+
+ LDAP_MUTEX_UNLOCK( ld, LDAP_REQ_LOCK );
+ LDAP_MUTEX_UNLOCK( ld, LDAP_CONN_LOCK );
+
+ return( rc );
+}
+
+
+/*
+ * Abandon all outstanding requests for msgid (included child requests
+ * spawned when chasing referrals). This function calls itself recursively.
+ * No locking is done is this function so it must be done by the caller.
+ * Returns an LDAP error code and sets it in LDAP *ld as well
+ */
+static int
+do_abandon( LDAP *ld, int origid, int msgid, LDAPControl **serverctrls,
+ LDAPControl **clientctrls )
+{
+ BerElement *ber;
+ int i, bererr, lderr, sendabandon;
+ LDAPRequest *lr = NULL;
+
+ /*
+ * An abandon request looks like this:
+ * AbandonRequest ::= MessageID
+ */
+ LDAPDebug( LDAP_DEBUG_TRACE, "do_abandon origid %d, msgid %d\n",
+ origid, msgid, 0 );
+
+ /* optimistic */
+ lderr = LDAP_SUCCESS;
+
+ /*
+ * Find the request that we are abandoning. Don't send an
+ * abandon message unless there is something to abandon.
+ */
+ sendabandon = 0;
+ for ( lr = ld->ld_requests; lr != NULL; lr = lr->lr_next ) {
+ if ( lr->lr_msgid == msgid ) { /* this message */
+ if ( origid == msgid && lr->lr_parent != NULL ) {
+ /* don't let caller abandon child requests! */
+ lderr = LDAP_PARAM_ERROR;
+ goto set_errorcode_and_return;
+ }
+ if ( lr->lr_status == LDAP_REQST_INPROGRESS ) {
+ /*
+ * We only need to send an abandon message if
+ * the request is in progress.
+ */
+ sendabandon = 1;
+ }
+ break;
+ }
+ if ( lr->lr_origid == msgid ) { /* child: abandon it */
+ (void)do_abandon( ld, msgid, lr->lr_msgid,
+ serverctrls, clientctrls );
+ /* we ignore errors from child abandons... */
+ }
+ }
+
+ if ( ldap_msgdelete( ld, msgid ) == 0 ) {
+ /* we had all the results and deleted them */
+ goto set_errorcode_and_return;
+ }
+
+ if ( lr != NULL && sendabandon ) {
+ /* create a message to send */
+ if (( lderr = nsldapi_alloc_ber_with_options( ld, &ber )) ==
+ LDAP_SUCCESS ) {
+ int abandon_msgid;
+
+ LDAP_MUTEX_LOCK( ld, LDAP_MSGID_LOCK );
+ abandon_msgid = ++ld->ld_msgid;
+ LDAP_MUTEX_UNLOCK( ld, LDAP_MSGID_LOCK );
+#ifdef CLDAP
+ if ( ld->ld_dbp->sb_naddr > 0 ) {
+ bererr = ber_printf( ber, "{isti",
+ abandon_msgid, ld->ld_cldapdn,
+ LDAP_REQ_ABANDON, msgid );
+ } else {
+#endif /* CLDAP */
+ bererr = ber_printf( ber, "{iti",
+ abandon_msgid, LDAP_REQ_ABANDON, msgid );
+#ifdef CLDAP
+ }
+#endif /* CLDAP */
+
+ if ( bererr == -1 ||
+ ( lderr = nsldapi_put_controls( ld, serverctrls,
+ 1, ber )) != LDAP_SUCCESS ) {
+ lderr = LDAP_ENCODING_ERROR;
+ ber_free( ber, 1 );
+ } else {
+ /* try to send the message */
+ lderr = nsldapi_send_abandon_message( ld,
+ lr->lr_conn, ber, abandon_msgid );
+ }
+ }
+ }
+
+ if ( lr != NULL ) {
+ /*
+ * Always call nsldapi_free_connection() so that the connection's
+ * ref count is correctly decremented. It is OK to always pass
+ * 1 for the "unbind" parameter because doing so will only affect
+ * connections that resulted from a child request (because the
+ * default connection's ref count never goes to zero).
+ */
+ nsldapi_free_connection( ld, lr->lr_conn, NULL, NULL,
+ 0 /* do not force */, 1 /* send unbind before closing */ );
+
+ /*
+ * Free the entire request chain if we finished abandoning everything.
+ */
+ if ( origid == msgid ) {
+ nsldapi_free_request( ld, lr, 0 );
+ }
+ }
+
+ /*
+ * Record the abandoned message ID (used to discard any server responses
+ * that arrive later).
+ */
+ LDAP_MUTEX_LOCK( ld, LDAP_ABANDON_LOCK );
+ if ( ld->ld_abandoned == NULL ) {
+ if ( (ld->ld_abandoned = (int *)NSLDAPI_MALLOC( 2
+ * sizeof(int) )) == NULL ) {
+ lderr = LDAP_NO_MEMORY;
+ LDAP_MUTEX_UNLOCK( ld, LDAP_ABANDON_LOCK );
+ goto set_errorcode_and_return;
+ }
+ i = 0;
+ } else {
+ for ( i = 0; ld->ld_abandoned[i] != -1; i++ )
+ ; /* NULL */
+ if ( (ld->ld_abandoned = (int *)NSLDAPI_REALLOC( (char *)
+ ld->ld_abandoned, (i + 2) * sizeof(int) )) == NULL ) {
+ lderr = LDAP_NO_MEMORY;
+ LDAP_MUTEX_UNLOCK( ld, LDAP_ABANDON_LOCK );
+ goto set_errorcode_and_return;
+ }
+ }
+ ld->ld_abandoned[i] = msgid;
+ ld->ld_abandoned[i + 1] = -1;
+ LDAP_MUTEX_UNLOCK( ld, LDAP_ABANDON_LOCK );
+
+set_errorcode_and_return:
+ LDAP_SET_LDERRNO( ld, lderr, NULL, NULL );
+ return( lderr );
+}
+
+/*
+ * Try to send the abandon message that is encoded in ber. Returns an
+ * LDAP result code.
+ */
+static int
+nsldapi_send_abandon_message( LDAP *ld, LDAPConn *lc, BerElement *ber,
+ int abandon_msgid )
+{
+ int lderr = LDAP_SUCCESS;
+ int err = 0;
+
+ err = nsldapi_send_ber_message( ld, lc->lconn_sb,
+ ber, 1 /* free ber */, 0 /* will not handle EPIPE */ );
+ if ( err == -2 ) {
+ /*
+ * "Would block" error. Queue the abandon as
+ * a pending request.
+ */
+ LDAPRequest *lr;
+
+ lr = nsldapi_new_request( lc, ber, abandon_msgid,
+ 0 /* no response expected */ );
+ if ( lr == NULL ) {
+ lderr = LDAP_NO_MEMORY;
+ ber_free( ber, 1 );
+ } else {
+ lr->lr_status = LDAP_REQST_WRITING;
+ nsldapi_queue_request_nolock( ld, lr );
+ ++lc->lconn_pending_requests;
+ nsldapi_iostatus_interest_write( ld,
+ lc->lconn_sb );
+ }
+ } else if ( err != 0 ) {
+ /*
+ * Fatal error (not a "would block" error).
+ */
+ lderr = LDAP_SERVER_DOWN;
+ ber_free( ber, 1 );
+ }
+
+ return( lderr );
+}
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